Home / 8,961.56-13,438.10-3,117.44

Finding the Fourth Proportional to 8,961.56, 13,438.10 and 3,117.44

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Solution

The fourth proportional to 8,961.56, 13,438.10 and 3,117.44 is: 4,674.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.56 : 13,438.10 = 3,117.44 : x
  2. Step 2: Convert to fraction form
    8,961.56/13,438.10 = 3,117.44/x
  3. Step 3: Cross multiply
    8,961.56x = 13,438.10 × 3,117.44
  4. Step 4: Simplify right side
    8,961.56x = 41,892,470.46
  5. Step 5: Solve for x
    x = 41,892,470.46/8,961.56
  6. Step 6: Final answer
    x = 4,674.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.